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 A kind of slog ? C + SUM f_n(x) ln^[n](x) ? tommy1729 Ultimate Fellow Posts: 1,438 Threads: 349 Joined: Feb 2009 03/09/2013, 01:33 PM I was thinking about C + f_1(x) ln(x) + f_2(x) ln^[2](x) + f_3(x) In^[3](x) + ... This should make a kind of slog. Or the similar : abel function for 2sinh(x). Similar question for C + f_1(x) arc2sinh(x) + f_2(x) arc2sinh^[2](x) + ... Regards tommy1729 tommy1729 Ultimate Fellow Posts: 1,438 Threads: 349 Joined: Feb 2009 03/09/2013, 02:46 PM For instance f_n(x) could be a gauss-like erf function with tops at sexp(n). regards tommy1729 « Next Oldest | Next Newest »

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